I've got the GDP 2-micron and am running the 7-micron in the stock canister. I agree that DC should have put them in as stock equipment. I would like to see a formal posting by Bosch, or any written info from Bosch that clearly defines their spec to DC. It would be ground to stand on if we had any warranty issues with DC regarding the addition of the 2-micron filter setups. I see this addition as preventative to the injector problems and the 'dirty fuel' argument coming from the dealers regarding our warranties on injectors. The burden of proof about the aftermarket filter is on DC as they do have to prove that these cause the problems to void a warranty. Honestly, too much hassle for them and us, but it could be a hassle none-the-less if they continue to be pig-headded towards buyers with real problems that they caused by not following Bosch's specs. If the additional filtration puts stress on the tank supply pump and it dies, then once again they have shown their ineptitude regarding a quality delivery pump. If the final pump to the rail dies as a result of the tank supply pump, then as I see it, their poor design 'caused' the failure and I am prepared to do the dance with them at a legal level. Right now we are in a buyer beware situation, but I can see where it could become a seller beware if they don't step up to the plate and fix the problems with a recall. It is all thier error and should be their responsibility to fess up and take care of the owners. If I have problems with the tank supply pump and have to get it fixed under warranty, I will then go straight to the addition of the Walbro pump to protect the final pump from damage due to low pressure.
CD